High frequency oscillator, D'Arsonval & Riviere
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: High frequency oscillator, D'Arsonval & Riviere. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: High frequency oscillator, D'Arsonval & Riviere. Wellcome Collection. Source: Wellcome Collection.